A fuzzy-set approach to fault-type identification in digital relaying

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:152745

Ferrero, A ^[1]; Sangiovanni, S; Zappitelli, E ^[2]

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1. Politecnico di Milano (Italy). Dipartimento di Elettrotecnica
2. Univ. of Rome - La Sapienza, Rome (Italy). Dipartimento di Ingegneria Elettrica

Sometime the operations that a relay is required to perform cannot be easily described in a deterministic way. A significant example of this situation is given by the operations a line really must perform in order to detect the type of fault (line-to-ground, line-to-line, line-to-line involving ground). Recently, the mathematical theory of fuzzy sets featured many practical applications, mainly in industrial controls, and fuzzy-set processors are available to allow real time applications. This paper shows that a fuzzy-set approach can be useful even in digital relaying, whenever ``fuzzy`` decisions have to be undertaken. A possible application to the detection of the type of fault when symmetrical component relaying techniques are adopted is proposed and the results of simulation tests are given.

• OSTI ID: 152745
• Report Number(s): CONF-9404175--; ISBN 0-7803-1883-8
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
DETECTION
ELECTRICAL FAULTS
FUZZY LOGIC
POWER DISTRIBUTION SYSTEMS
POWER TRANSMISSION LINES
SYSTEM FAILURE ANALYSIS